B4J Question TableView Column Position

[Agnetha]

Hello!

I have to set the column positions in TableView (NOT B4x Table) programmaticly, e.g. Col3, Col0, Col1, Col2.
How can i do that programmaticly ?
Thank you!

 

[DarkoT]

Hi,
please, take a look on this example... If you will need help, let me know...

DatTable - extension of B4XTable

Hi to all, Based on the B4XTable library, I have made a small enhancement that is extremely practical for the user. It enables three additional functionalities: a) Reordering of row sequence and column lengths b) Resetting the saved layout (to default layout) c) Exporting data to Excel The...

www.b4x.com

With small modification you can use the same logic with a TableView... Or I can prepare example which will help you to create end solution...

 

[mangojack]

Based on @Erels example Here ... which saves the column order on app close ... (when user manually reorders columns).

I have slightly modified the code to also programmatically reorder the columns and again save the order for next app run.

In the example this is done via Button click , and in a set new order, so you will have to think of an alternative way to work in with your app.

But it should give you a good insight how you might be able to solve your issue.

 

[DarkoT]

Hello!

I have to set the column positions in TableView (NOT B4x Table) programmaticly, e.g. Col3, Col0, Col1, Col2.
How can i do that programmaticly ?
Thank you!

Or - maybe this will help you... If you need example, I can share this source to you...

 

[mangojack]

@DarkoT .. the OP is wishing to sort the columns programmatically.

 

[DarkoT]

@DarkoT .. the OP is wishing to sort the columns programmatically.

Ah, right... I obviously missed that requirement... but - the basic idea is still included in the solution (as a starting point)....

 

[Agnetha]

Much thanks to both of you! ?

 

[Daestrum]

This should do what you want ( in inline java )

Call it with

    ' put cols in order 2,0,1   - with some bad column numbers added too
    Me.as(JavaObject).RunMethod("orderOfCols",Array(TableView1,Array As Int(2,-3,0,1,9)))

#if java
import javafx.scene.control.TableView;
import javafx.scene.control.TableColumn;

public static void orderOfCols(TableView tv,int[] order){
    // number of columns in table
    int colcnt = tv.getColumns().size();
    
    // dimension our saved columns
    TableColumn[] cols = new TableColumn[colcnt];
    
    // grab original columns
    for (int a = 0 ; a< colcnt; a++){
        cols[a] = (TableColumn)tv.getColumns().get(a);
    }
    
    // clear the columns in the tableview
    tv.getColumns().clear();

    // insert our saved columns back into tableview in the order we want
    for (int aaa : order){
        // check for valid columns
        if (aaa >colcnt || aaa < 0) continue;
        tv.getColumns().add(cols[aaa]);
    }    
}
#End If